CN100395425C - electric lock - Google Patents

Abstract

To provide an electric lock in which a latch bolt and a dead bolt are retracted simultaneously by the rotational operation of a lever handle after an unlocking signal from an unlocking-code input means is received. A driving hub for projecting or retracting the dead bolt is projected from one side of a lock shaft, a supporting-shaft hub for pivotally attaching a clutch lever is projected from the other side and a first driving leg and a second driving leg arranged on both sides of the lock shaft are installed to a handle shaft. A screw rod is connected to an output shaft for a motor forward and reversely rotated on the basis of an actuating signal from the unlocking code input means, the screw rod is screwed into a tapped hole of a carrier for a cam plate member guided so as to be linearly moved and a pressure-receiving arm for the clutch lever is abutted against the side face of the lock shaft by a spring for urging the lever when the cam plate member is positioned at a retracted place. The pressure-receiving arm under the abutted state against the lock shaft is pushed by the first driving leg, and a passive arm for an interlocking lever is pushed by the second driving leg. (C)2004,JPO.

Description

electric lock

technical field

The present invention relates to an electric lock that allows a fixed bolt to be submerged into a lockbox by means of an electric drive.

Background technique

Conventional electric locks include unlocking code input devices using numeric keys or card keys, fixed latches that can be moved in and out by the operation of manual devices such as finger pulls and cylinder locks, and movable latches that can be sunken by using gripping devices such as lever handles. , the unlocking method is: first use the electric drive device such as the electromagnet that is acted on by described input device or electric motor etc. to allow the submersion of fixed bolt (first stage), then, utilize described manual device to make fixed bolt submerge (second stage) ), and finally, the door is opened while the movable latch is submerged using the holding device (stage 3).

In conventional electric locks that operate in such an operation sequence, since the unlocking operation is performed in three steps, it is obviously labor-intensive and has a problem of poor operability. In order to improve the operability, various improved structures have been proposed (for example, refer to Patent Document 1, ie, Japanese Patent Application Publication No. 43772, 2010).

The structure of the improved electric lock has: a fixed bolt and a movable bolt arranged in the lock box; the positive and negative rotation can be used to make the fixed bolt go in and out by the operation of pulling the finger, and the operation of the cylinder lock can be rotated to one side. The first action body that makes the fixed latch protrude; the connecting rod that makes the first action body reversibly rotate; the movable latch is submerged by the rotation operation of the grip member such as a lever handle, and the second action body is used for reversible rotation. Lifting Lifting body; when using the unlock code input device to make the drive body assembled in the lock box work, the linkage device that makes the lifting body swing to one side with the fulcrum on the way as the center; only when the lifting body swings to one side An engaging device for engaging the lifting body with the connecting rod.

In this electric lock, when the unlocking code input device is used to activate the driving body, the linkage device is used to make the lifting body swing, and the lifting body is engaged with the connecting rod by the engaging device. Therefore, when the second action body is rotated by the operating member to sink the movable bolt, the lock can be unlocked by sinking the fixed bolt while rotating the first action body by the rising elevating body and the connecting rod.

In this electric lock, since the fixed bolt and the movable bolt can be sunk in at the same time, the operability of itself can be greatly improved, but since a complex linkage mechanism must be included, there is an overall production and assembly cost of the electric lock heightened problem.

Contents of the invention

The present invention is made in order to solve the above problems, and its purpose is to provide an electric lock, which can use the rotation operation of the lever handle to simultaneously sink the fixed bolt and the movable bolt after receiving the unlock signal from the unlock code input device. action, and can save production and assembly costs because no complicated linkage mechanism is installed.

In order to achieve the above object, the structure of the electric lock of the present invention is characterized in that it has:

The handle provided on the main lock box equipped with the unlock code input device;

a fixed latch and a movable latch provided in the secondary lockbox disposed behind the main lockbox;

On the extension line of the handle shaft of the handle, it is rotatably arranged in the auxiliary lock box, and the side of the locking shaft protrudes to engage with the inner end of the fixed latch to make the fixed latch go in and out. the operating drive hub, on the other side protruding from the locking shaft of the fulcrum hub;

fixed on the handle shaft, protruding from the main lock box and rotatably inserted into the auxiliary lock box, a first driving foot and a second driving foot arranged on both sides of the locking shaft;

A motor that is installed in the secondary lock box facing the hub of the fulcrum, has a screw connected to the output shaft, and rotates according to the action signal from the unlock code input device;

a cam plate member that is installed in the auxiliary lock box and is provided with a screw hole screwed with the screw rod on the bracket portion at the base end portion to be linearly movable;

A clutch lever, which is pivotally mounted on the front end of the hub of the fulcrum by a fulcrum, and swings around the fulcrum when the cam plate member advances and retreats by forward and reverse rotation of the screw;

The pressure-bearing arm part is arranged on the clutch lever, and when the clutch lever swings around the fulcrum, the pressure-bearing arm part contacts and separates from the side of the locking shaft;

a spring for urging the lever to make the pressure-receiving arm part abut against the side surface of the lock shaft when the cam plate member is at the withdrawn position;

The linkage rod is pivotally mounted on the auxiliary lock box, and a driven support arm protrudes toward the locking axis on one side of the clamping pivot, and forms an inner end with the movable latch on the other side. Snap-on towing arms,

The front end surface of the pressure-bearing arm portion in contact with the locking shaft is pushed by the first driving leg, and the side surface of the pressure-bearing arm portion is pushed by the second driving leg.

Generally, the auxiliary lock box is submerged into the inner space fixed at the end of the door, and the main lock box is fixed in contact with the front of the end of the door. When the door is locked relative to the fixed frame, the fixed latch and the movable latch only protrude a predetermined distance from the end face of the auxiliary lock box, and engage with the bearing parts on the side of the fixed frame. In this locked state, the cam plate member approaches the pivot hub side, and the clutch lever is pushed by the cam slope. Therefore, despite the urging force of the lever urging spring, the pressure-receiving arm portion of the clutch lever is located at a position sufficiently separated from the side of the lock shaft.

When the clutch lever is at the disengaged position, since the first driving foot cannot push the front end of the bearing arm, even if the handle is turned, the driving hub cannot drive the fixed latch to Not in position.

Due to the rotation of the handle, the second driving foot pushes the side of the driven arm part of the linkage lever, although the movable latch is temporarily driven in the direction of sinking, but the lock caused by the fixed latch is not released. For the original lock, when the hand is removed from the handle, the lock is extended back to the locked position by the action of the spring applied by the latch built into the handle of the latch.

When an unlock signal is output from an unlock code input device such as a number key or a fingerprint recognition unit, the motor rotates in one direction, and the cam plate member is aligned with the fulcrum by the linear helical movement of the screw and the bracket portion. The hub moves toward the direction of leaving, that is, the direction of unlocking. Therefore, the clutch lever swings by the action of the lever urging spring, and reaches the unlocking standby position where the pressure-receiving arm portion abuts against the side surface of the lock shaft.

In this stage, when the handle is rotated in the required direction, since the first driving leg pushes the front end face of the pressure-bearing arm part, the locking axis rotates in the unlocking direction, and the driving hub will The fixed bolt is pulled into the auxiliary lock box. On the other hand, since the second driving leg pushes the side of the driven support arm, the movable latch is submerged into the auxiliary lock box through the linkage rod. And, the door is opened by pulling the handle.

After the fixed latch is submerged in the unlocked position, the motor rotates in the reverse direction according to the operation signal from the control part, and the cam plate member moves toward the fulcrum hub side by the linear helical movement of the screw and the bracket part. direction, that is, the locking direction, and the clutch lever rotates to the retracted position where the pressure-bearing support arm is away from the side of the locking shaft.

When the door is locked and rotated towards the fixed frame, at the terminal end of the locking rotation, the movable latch uses the action of its cam surface to move forward and backward at one time. Engage with the bearing part on the side of the fixed frame. After the door is locked, when the handle is reversely rotated, since the first driving foot pushes the root of the driving hub, the driving hub can be used to push the fixed bolt to the locked position, which is consistent with the locking position. Engage with the bearing part on the side of the fixed frame body.

As mentioned above, the electric lock of the present invention, owing to make the driving hub that is protruded with the fixed latch on one side of the lock shaft, is provided with the pivotal support of the clutch lever on the other side of the lock shaft. Shaft hub, on the handle shaft, there are first driving feet and second driving feet arranged on both sides of the locking shaft, and the screw is connected to the output shaft of the motor that rotates forward and reverse according to the action signal from the unlocking code input device , the screw is screwed into the screw hole of the bracket portion of the cam plate member that is guided by linear movement, and when the cam plate member is at the retracted position, the pressure-bearing arm portion of the clutch lever is forced by a spring using the lever biasing force. Abut against the side of the locking shaft, use the first driving foot to push the pressure-bearing arm part in the state of contact with the locking shaft, and use the second driving foot to push the driven arm part of the linkage lever, so when receiving the After the unlocking code is input to the unlocking signal of the device, the fixed latch and the movable latch can be plunged in simultaneously by rotating the lever handle, and the unlocking operation can be easily performed by a single action, which makes the operability superior.

In addition, unlike conventional electric locks, it can save production and assembly costs because no complicated interlocking mechanism is installed.

Description of drawings

Fig. 1 is a front view of an electric lock according to an embodiment of the present invention.

Fig. 2 is a left side view of the electric lock of Fig. 1 .

Fig. 3 is a main part rear view of a main lock box using the electric lock of Fig. 1 .

FIG. 4 is a top view of the main lock box of FIG. 3 .

Fig. 5 is a sectional view taken along line A-A of Fig. 2 .

Fig. 6 is a cross-sectional view taken along line B-B of Fig. 5 .

Fig. 7 is a sectional view taken along line C-C of Fig. 5 .

Fig. 8 is a sectional view taken along line D-D of Fig. 5 .

Detailed ways

Embodiments of the present invention will be described below with reference to the drawings. In this electric lock, number key unit 2 is contained in the top of main lock box 4 as the unlocking code input device, and fingerprint recognition unit 6 is contained in the middle part of main lock box 4, after utilizing these devices through personal confirmation, this The confirmation signal is sent to the control unit 8 provided in the main lock box 4 . An operation signal from the control unit 8 is sent to the motor 10 to control the rotation of the motor 10 . The bottom of main lock box 4 is equipped with the handle 12 of lever handle type.

On the inner end surface of the handle shaft 14 , a U-shaped fitting 16 is fixed by welding or screw fastening to form a first driving leg 18 and a second driving leg 20 . A shaft hole 22 is formed at the inner end of the handle shaft 14, and a square shaft 24 is rotatably fitted therein, and a detent pin 28 is inserted into an annular groove 26 at the proximal end to prevent it from coming off.

The square shaft 24 rotatably protrudes from the circular hole 32 of the back panel 30 of the main lock box 4 , and is rotatably inserted into the secondary lock box 34 from the circular hole 38 of the front wall 36 of the secondary lock box 34 . The first driving foot 18 and the second driving foot 20 protrude rotatably from the arc-shaped slots 40 on both sides of the circular hole 32 , and the arc-shaped slots 42 on both sides of the circular hole 38 are rotatable. The auxiliary lock box 34 is inserted into the auxiliary lock box 34 and is arranged to be opposed to both sides of the lock shaft 44 .

The auxiliary lock box 34 accommodated and fixed in the end of the door 46 is configured to overlap with the back of the lower half of the main lock box 4, and the arc-shaped slot 40 and the arc-shaped slot 42 are arranged oppositely. Inside the auxiliary lock box 34, the fixed latch 48 and the movable latch 50 are housed vertically in parallel. The fixing latch 48 has a structure in which three metal plates are stacked and connected by a connecting pin 49 to form an integral body. The front end latch portion 52 of the fixed latch 48 is inserted into the opening 54 of the end panel 35 of the auxiliary lock box 34, and a horizontally long guide hole 56 is formed in the middle part of the fixed latch 48, and is inserted and fixed in the auxiliary lock box 34. The guide pin 58 in. The front-end latch portion 52 is detachable from the mounting portion 62 for a fixed latch of the fixed frame body 60 .

Both ends of the elbow connection spring 66 are embedded on the spring support pin 64 and the guide pin 58 provided on the fixed latch 48, and the fixed latch 48 is stably held on the front end latch portion by the action of the elbow connection spring 66. 52 extended locked position and submerged unlocked position. On the lower side portion of the inner end portion of the fixing latch 48 , a first follower portion 68 and a second follower portion 70 are formed on the wall surface of the recess. The guide pin 138 fixed to the inner end of the fixed bolt is inserted into the guide hole 139 of the front wall 36 of the secondary lock box 34 .

The lock shaft 44 is rotatably supported on the extension line of the handle shaft 14 so as to cross the front wall 36 and the rear panel 72 of the sub lock box 34 in the front and back directions. The front wall 36 and the back panel 72 are connected into one body by using fixing bosses 37 and screws 39 . A through hole 74 into which the square shaft 24 is rotatably fitted is formed in the center portion of the lock shaft 44 . The drive hub 76 protrudes from one side of the lock shaft 44 , and the other side of the lock shaft 44 protrudes in a vertical direction from a support hub 78 . The drive hub 76 pushes the first driven portion 68 or the second driven portion 70 on the fixed latch 48 side, thereby operating the fixed latch 48 to go in and out.

In the inside of the auxiliary lock box 34, on the obliquely lower side of the fulcrum hub 78, the motor 10 is fixedly installed by means of a fixing screw 80, a bracket 81, and a connecting screw 83, and a screw rod 84 is mounted on its horizontal output shaft 82. Connected to rotate as one. The motor 10 is controlled to rotate in accordance with an identity verification signal from the unlock code input device. The cam plate member 86 is installed in the auxiliary lock box 34 so as to be guided to move linearly in the left-right direction, and a screw hole 90 for screwing the screw rod 84 is provided in the bracket portion 88 at the base end. A first cam slope portion 92 is formed at the front end portion of the cam plate member 86 , a second cam slope portion 94 is formed at the middle portion, and a cam shoulder portion 96 is formed at a connecting portion with the bracket portion 88 .

At the front end portion of the fulcrum hub 78 , a clutch lever 98 is pivotally mounted by a fulcrum 100 . The screw rod 84 is rotated forward and reverse by the motor 10. When the cam plate member 86 advances and retreats in the left and right direction through the helical motion, the clutch lever 98 swings and rotates around the support shaft 100, and the pressure bearing arm portion 102 and the side surface of the lock shaft 44 contact and separation. On the base end portion of the clutch lever 98 , when the cam plate member 86 advances leftward in FIG. 5 , there is formed a cam protrusion 104 pressed downward by the first cam slope portion 92 .

When the cam plate member 86 is at the retracted position after being separated from the cam protrusion 104 , that is, at the unlock standby position, the pressure receiving arm portion 102 abuts against the side surface of the lock shaft 44 by the lever urging spring 106 . The lever urging spring 106 is formed of a torsion coil spring, the coil portion of which is fitted on the support shaft 100 , and one linear end portion abuts against the peripheral surface of the lock shaft 44 . The other linear end abuts against the base of the cam protrusion 104 .

The pivot 110 of the linkage lever 108 is fixed on the front wall 36 and the back wall 72 of the auxiliary lock box 34, the driven arm portion 109 of the linkage lever 108 is arranged in the horizontal direction, and the traction arm portion 112 is arranged obliquely. The front end side portion of the pulling arm portion 112 is bent. The front end latch portion 114 of the movable latch 50 is a member that goes in and out from the end face opening 116 of the auxiliary lock box 34 , and the main body portion 118 of the movable latch 50 is connected to the front end latch portion 114 by a connection screw 120 through a washer 121 . A guide pin 122 is attached to an inner end portion of the main body portion 118 , and the guide pin 122 is inserted into a left-right guide groove 123 formed in the auxiliary lock box 34 . The front end latch portion 114 is detachable from the latch bearing portion 124 of the fixed frame body 60 .

The pulling arm portion 112 of the link lever 108 is engaged with the left side surface of the guide pin 122 . The guide plate 126 fixed on the secondary lock box 34 is embedded in the horizontal slot 128 of the movable latch 50 . A latch urging spring 132 composed of a compression coil spring is inserted between a spring support portion 130 formed at the left end portion of the horizontally long groove 128 and the guide plate 126 .

A hub urging spring 136 constituted by a torsion coil spring is attached to a spring support pin 134 at the inner end of the fixed latch 48 to press the drive hub 76 toward the first driven portion 68 . Between the front wall 36 and the back wall 72 of the auxiliary lock box 34 , a brake pin 140 of the linkage rod 108 and a stop latch 142 of the driving hub 76 are fixed. A first micro switch 144 and a second micro switch 146 for detecting the position of the cam plate member 86 are provided on the auxiliary lock box 34 .

The first actuating lever 148 of the first microswitch 144 manipulated by the second cam ramp 94 and the second actuating lever 150 of the second microswitch 146 manipulated by the cam shoulder 96 are reversed from each other. configured. The cam plate member 86 moves to the left to push the cam protrusion 104 with the first cam slope portion 92, and when the pressure bearing arm portion 102 reaches the retracted position after leaving the side of the locking shaft 44, it pushes the first micro switch of the first micro switch. A lever 148 is actuated to cut off power to the motor 10 .

When the cam plate member 86 moves to the right and pushes the second actuating lever 150 of the second microswitch 146 with the cam shoulder 96 , power to the motor 10 is cut off. Since the energization to the motor 10 is limited to the necessary minimum in this way, the generation of noise can be suppressed, and the quietness is excellent.

Claims (1)

1. An electric lock, characterized in that it has: The handle provided on the main lock box equipped with the unlock code input device; a fixed latch and a movable latch provided in the secondary lockbox arranged behind the main lockbox; The locking shaft is rotatably arranged in the auxiliary lock box on the extension line of the handle shaft of the handle, and the side of the locking shaft protrudes on one side and engages with the inner end of the fixed latch so that the The drive hub for the operation of the fixed bolt in and out, and the pivot hub is protrudingly provided on the other side; a first driving foot and a second driving foot fixed on the handle shaft, protruding from the main lock box and rotatably inserted into the auxiliary lock box, arranged on both sides of the locking shaft; A motor that is installed in the secondary lock box facing the hub of the fulcrum, has a screw connected to the output shaft, and rotates according to the action signal from the unlock code input device; a cam plate member installed in the secondary lock box and provided with a screw hole for screwing the screw rod on the bracket portion at the base end portion in a linearly movable manner; The clutch lever is pivotally mounted on the front end of the hub of the fulcrum by a fulcrum, and when the cam plate member advances and retreats by the forward and reverse rotation of the screw, the clutch lever moves around the fulcrum. swing; The pressure-bearing arm part is arranged on the clutch lever, and when the clutch lever swings around the fulcrum, the pressure-bearing arm part contacts and separates from the side of the locking shaft; a spring for urging the lever to make the pressure-receiving arm part contact the side surface of the lock shaft when the cam plate member is in the withdrawn position; and The linkage rod is pivotally mounted on the auxiliary lock box, and a driven support arm protrudes toward the locking axis on one side sandwiching the pivot shaft, and an inner end connected to the movable latch is formed on the other side. part snap-on draw arm, The front end surface of the pressure-receiving arm portion in contact with the lock shaft is pushed by the first driving leg, and the side surface of the driven arm portion is pushed by the second driving leg.

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